Screw Jack: The Ultimate Lifting Tool

What is the most appropriate use of a screw jack?

a- spreading
b- pulling
c- support
d- lifting

Answer:

A screw jack is most appropriately used for lifting objects. It does this by converting rotational motion from the screw into linear motion, making it perfect for lifting heavy items.

A screw jack is a mechanical device designed to lift heavy objects by applying force through the rotation of a screw. Of the options provided, the most appropriate application for a screw jack would be d- lifting. This is because a screw jack converts rotational motion into linear motion which is ideal for lifting objects. It does this by using the simple principle of the mechanical advantage achieved by a screw's helical thread. The other options, such as spreading, pulling, and support, are less suited to the main functions of a screw jack.